------------[ cut here ]------------
WARNING: CPU: 1 PID: 33 at net/mptcp/subflow.c:1348 subflow_data_ready+0x2da/0x390
Modules linked in:
CPU: 1 PID: 33 Comm: kworker/u4:2 Not tainted 6.1.84-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:subflow_data_ready+0x2da/0x390 net/mptcp/subflow.c:1347
Code: 60 0f 85 d2 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a5 22 11 f7 4c 89 e7 e8 5d 0f 00 00 eb b8 e8 96 22 11 f7 <0f> 0b e9 57 ff ff ff 44 89 f9 80 e1 07 38 c1 0f 8c bf fd ff ff 4c
RSP: 0018:ffffc900001dffc0 EFLAGS: 00010246
RAX: ffffffff8a79645a RBX: 0000000000000000 RCX: ffff8880166a9dc0
RDX: 0000000000000102 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0070 R08: ffffffff8a796350 R09: ffffed100ac093f8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888077871880
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888056049700
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fccd57a8000 CR3: 0000000028a50000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 tcp_data_queue+0x21c5/0x6fd0 net/ipv4/tcp_input.c:5102
 tcp_rcv_state_process+0x2682/0x4510 net/ipv4/tcp_input.c:6704
 tcp_v4_do_rcv+0x729/0xb00 net/ipv4/tcp_ipv4.c:1700
 tcp_v4_rcv+0x29e0/0x3250 net/ipv4/tcp_ipv4.c:2099
 ip_protocol_deliver_rcu+0x381/0x740 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2b4/0x4f0 net/ipv4/ip_input.c:233
 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302
 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5528 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642
 process_backlog+0x381/0x760 net/core/dev.c:5970
 __napi_poll+0xc7/0x470 net/core/dev.c:6537
 napi_poll net/core/dev.c:6604 [inline]
 net_rx_action+0x70f/0xeb0 net/core/dev.c:6718
 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x51/0xb0 kernel/rcu/tree.c:721
Code: 08 b1 8c 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 60 bd 6e 00 48 c7 c3 a8 56 03 00 49 03 1e 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 1e 8b 03 65 ff 0d 05 2f 8f 7e 74 0c 83 e0
RSP: 0018:ffffc90000aa7900 EFLAGS: 00000a02
RAX: 1ffff11017326ad5 RBX: ffff8880b99356a8 RCX: ffffffff816a7a37
RDX: 0000000000000000 RSI: ffffffff8b3d2d00 RDI: ffffffff8b3d2cc0
RBP: ffffc90000aa7a50 R08: dffffc0000000000 R09: fffffbfff1ce6d46
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000154f30
R13: ffffffff8a56370a R14: ffffffff8cb10858 R15: dffffc0000000000
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xd6/0xa20 kernel/locking/lockdep.c:5673
 rcu_lock_release include/linux/rcupdate.h:355 [inline]
 rcu_read_unlock include/linux/rcupdate.h:824 [inline]
 batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:772 [inline]
 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:826 [inline]
 batadv_iv_ogm_schedule+0x6f4/0x1090 net/batman-adv/bat_iv_ogm.c:869
 batadv_iv_send_outstanding_bat_ogm_packet+0x6fa/0x800 net/batman-adv/bat_iv_ogm.c:1713
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 b1 8c 4c 89 f0    	or     %dh,-0xf76b374(%rcx)
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
   f:	74 08                	je     0x19
  11:	4c 89 f7             	mov    %r14,%rdi
  14:	e8 60 bd 6e 00       	call   0x6ebd79
  19:	48 c7 c3 a8 56 03 00 	mov    $0x356a8,%rbx
  20:	49 03 1e             	add    (%r14),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	75 1e                	jne    0x51
  33:	8b 03                	mov    (%rbx),%eax
  35:	65 ff 0d 05 2f 8f 7e 	decl   %gs:0x7e8f2f05(%rip)        # 0x7e8f2f41
  3c:	74 0c                	je     0x4a
  3e:	83                   	.byte 0x83
  3f:	e0                   	.byte 0xe0